Stručni rad
CROATIAN FRESHWATER FISHERIES IN 1996.
Sažetak
Data on the production and fish catch according to species, on the surface of the fish ponds, on the means of fish catching and on the distribution of the production and the catch in 1996 is presented. The surface area used for production of fish has decreased by 1357 ha or 11.99%. The total fish amount has decreased by 1,921.00 tons or 29.76%.
The feeding coefficient is 4 kg (33.33%) bigger compared to the previous year.
The amount of the fertilizer used has decreased by 18.79%.
The fry carp growing ponds make up 5.99% of the total fish pond surfaces, the young carp ponds 21.13%, and the ponds with consumption fish 71.53%.
The total fish amount in the carp ponds was 376 kg/ha, and in the trout ponds it was 146.6 tons/ha. The most produced fish species is the carp with 82.21 %, followed by the trout with 8.57%, the herbivorous fish with 4.78%, while all the other fish species make up 4.44% of the entire production.
In the structure of herbivorous fish the grass carp is leading with 64,28%, followed by the big head carp with 26.02% and the silver carp with 9.70%.
Compared to the previous year the production of the trout and tench has somewhat increased, while the production of all the other species of fish has decreased.
Fish catch in open waters has increased by 19.23% in comparison to the previous year.
In the production and catch of the total freshwater fish, carp made up 77.46%, the herbivorous fish made up 4.32%, trout 4.32%, sheat fish, pike perch and pike 2.99% and all other fish species 7.36%.
As far as the distribution of production and catch is concerned, 46.91% were sold on the market, 39.19% were used for reproduction (stocking the fish farms), mortalities were 6.23%, and for personal use (sports fishing) 7.67% was used.
The number of fisheries workers has decreased by 17.75%, and the production per worker has also decreased by 26.62%, compared to the previous year.
Average production per worker was 5.87 tons of fish.
Ključne riječi
fish produetion; fish catch; fish amount; surface area; fertilizing; feeding; feeding coefficient; 1996, Croatia
Hrčak ID:
47978
URI
Datum izdavanja:
1.10.1997.
Posjeta: 1.030 *